Tablet holder



FIG. 1 is a perspective view of a tablet holder of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof; the right side view is a mirror image thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a bottom view thereof.

The elements shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a tablet holder, as shown and described. 